On Thursday, April 20, at 6:30 p.m., Museum of the Moving Image will present an industry seminar "Voices Behind the Scenes: The Art of Voice-Over" with an all-star panel discussion exploring the unsung but pervasive art of voice-over recording for film and television. Organized by Joan Baker, author of Secrets of Voice-Over Success , (Sentinel Publications, 1-59181-033-7) the event will be hosted by Alan Kalter, the voice of Late Show with David Letterman . Ms. Baker's book sales and a set up donation table will benefit the Alzheimer's Association for a cure. Tickets for the event are $24 for the general public, $16 for Museum members and students. Call 718-784-4520 to purchase in advance or visit www.movingimage.us .